147879649 has 4 divisors (see below), whose sum is σ = 148654080. Its totient is φ = 147105220.

The previous prime is 147879619. The next prime is 147879659. The reversal of 147879649 is 946978741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 946978741 = 373 ⋅2538817.

It is a cyclic number.

It is not a de Polignac number, because 147879649 - 2¹¹ = 147877601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147879649.

It is not an unprimeable number, because it can be changed into a prime (147879619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386929 + ... + 387310.

It is an arithmetic number, because the mean of its divisors is an integer number (37163520).

Almost surely, 2^147879649 is an apocalyptic number.

It is an amenable number.

147879649 is a deficient number, since it is larger than the sum of its proper divisors (774431).

147879649 is an equidigital number, since it uses as much as digits as its factorization.

147879649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774430.

The product of its digits is 3048192, while the sum is 55.

The square root of 147879649 is about 12160.5776589766. The cubic root of 147879649 is about 528.8138288069.

The spelling of 147879649 in words is "one hundred forty-seven million, eight hundred seventy-nine thousand, six hundred forty-nine".